Adam e



(No Model.)

A'. E.. KARSN'ER.

LOCK.

i Patented Mar. 29,1898.

UNITED STATES PATENT l OFFICE.

ADAM KARSNER, OF CHILLIOOTIIE, MISSOURI.

LOCK.

SPECIFICATION forming part of Letters Patent' No.`601,442, dated March 29, 1898.

Application filed October 29, 1897.

To a/ZZ whom t may concern.-

Be it known that I, ADAM E. KARSNER, residing at Chillicothe, in the county of Livingston and State of Missouri, have invented a new and useful Lock, of which the following is a speciiication.

This invention relates generally to improvements in locks, and particularly to door-locks.

An object of the invention is to provide a lock which is simple in construction durable, and cheap, and in which springs are dispensed with, the lock combining a latch-bolt, locking-bolt, and night-latch.

' A further object is to provide an improved actuating mechanism for the latch.

A still further object is to so construct the latch-bolt and its actuating mechanism that it is reversible to accommodate doors swinging in either direction.

With the above and other objects in view the invention consists of a latch-bolt having a rack on its upper and lower edges, a block actuated by the door-knobs, said block being formed with a portion of a vertical rack, a segment pivoted to the lock-case in a recess in said block and engaging the rack thereof and the rack formed on the latch-bolt, a nightlatch for preventing the rotation of the spindle of the door-knobs and consequently locking the latch-bolt projected, and a means for disengaging said night-latch from'the sleeve of the door-knob spindle and holding the same out of engagement therewith, so that the latchbolt is freely movable by the rotation of the door-knob, said means being actuated by a key from either side of the door and a locking-bolt.

The invention further consists in the improved construction, arrangement, and combination of parts hereinafter fully described and afterward specifically pointed out in the claims.

In order to enable others skilled in the art to which my invention most nearly appertains to make and use the same, I will now proceed to describe its construction and operation, having reference to the accompanying drawings, forming part of this specification, in which- Figure l is a perspective view of my lock, the plate being removed from the lock-casing.

Fig. 2 is a side elevation with the plate reser'iai No. 656.834. (No model.)

moved, showing the lock-bolt projected and the latch-bolt locked from movement by the night-latch. Fig. 3 is a similar view showing the locking-bolt and latch-bolt retracted and the night-latch raised to permit the free movement of the latch-bolt. Fig. 4. is a perspective view of the tumbler for the locking-bolt. Fig. 5 is a similar view of the locking-bolt. Fig. 6 is a perspective view of the actuatingblock for the latch-bolt. Fig. 7 is a perspective view of the latch-bolt and segment. Fig. 8 is a view of the key for the night-latch.

Like letters of reference mark the same parts wherever they occur in the various figures of the drawings.

Referring to the accompanying drawings, A indicates the lock-casing, and movable vertically therein at its inner end is the actu atingblock B, having a cavity C in one of its faces and formed at its upper edge with the downwardlyexten ding slot D, which is rounded at its lower end, thus forming the lugs E on opposite sides thereof at the upper edge of the block. A portion of a vertical rack is formed in the lower portion of the forward wall of the cavity, as indicated at F, and pivoted to the lock-case and located in said cavity is the segment G, which is adapted to engage said vertical rack.

H is the latch-bolt, having the usual beveled head I on its outer end and having its stem formed at its upper and. lower edges with the racks J, one of which is adapted to lbe engaged by the segment Gr. By having the racks formed in the upper and lower edges of said latch-bolt the same may be reversed for use in doors swinging in opposite directions. The stem of this latch-bolt eX- tends through a horizontal slot K in the forward wall of the cavity of the block, as illustrated. Thus it will be seen that as the sliding block moves vertically the latch-bolt is projected into and retracted from its keeper. For effecting the upward movement of said block, and consequently the retraction of the latchbolt, I provide the sleeve L, which iits upon the spindle of the door-knobs within the lock and is provided with the horizontally-extending arms M, projecting from opposite sides thereof, which arms engage the under sides of the lugs E, so that as the door-knobs are turned from either side of the door said arms IOO formed in its upper edge'and provided with the slot P, extending upwardlyT from its lower edge, said slot adapted to register with the keyhole of the lock-casing and receive the bit of the key.

Q yis a vertically-movable tumbler having the lug R, which is adapted to engage the notches O of the locking-bolt and hold the same either projected or retracted, said tumbler being provided with the slot S, extending upwardly from itslower edge and having its upper wall inclined, asillustrated at P, said slot adapted to register with the keyhole and with the slot of the locking-bolt, with its upper Wall projecting below the upper wall of the lock-bolt slot. When the key is inserted in the lock and revolved, the tumble-r is raised by the engagement of the bit of the key with the upper wall P of slot S until the lug R is raised from the notch O of the locking-bolt. The locking-bolt is then projected by the further rotation of the same, and the tumbler being released engages the inner notch of the locking-bolt and holds the latter in its projected position.

I will now describe the night-latch, the same consisting of the bar U, pivoted to the upper Wall of the 'casing and provided at its opposite end with the projections V, which are adapted to receive the lug W, carriedby the sleeve L therebetween, and thus prevent the rotation of said sleeve. This locking-bar normally engages the sleeve of the door-knob spindle by gravity and thus locks the latchbolt projected, constituting a night-latch. For disengaging the night -latch from the sleeve I provide the bushing X, which is rotatable in the casing and is provided with a key-opening Y. Said lbushing carries a lug Z, which is adapted to engage the night-latch and hold the same raised, as illustrated in Fig. 3.` A dog a, carried by the lock-casing, engages a slot in the bushing and limits the movement thereof. This bushing may be so formed as to receive keys of different shapes, the key in the present instance being formed as illustrated in Fig. 8. This key may be inserted from either side of the door for the purpose ofA raising the night-latch and holding the same raised, or for releasing the same to permit it to drop downward by gravity and engage the sleeve of the door-knob spindle.

From the above description it will be seen that I have produced a very simple construction of door-lock combining a locking-bolt,

latch-bolt, and night-latch, and in which the use of springs is entirely obviated, and also that I have provided a very simple mechanism for actuating the latch-bolt. 1

A While Ihave illustrated and described the best means now known to me for carrying out my invention, I do not Wish to be understood as restricting myself to the exact details of construction shown and described, but hold that any slight changes or variations, such as might suggest themselves to the ordinary mechanic, will properly fall within the limit and scope of my invention.l

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

I. In a door-lock, the combination with the latch-bolt having a rack formed thereon, a sliding block having a vertical rack, a segment pivoted to the lock-case Within a recess in said sliding block and engaging the vertical rack thereof and the rack of the latch-bolt, and means carried by the spindle of the doorknobs for actuating the sliding block, substantially as set forth.

2. In a door-lock, the combination with the latch-bolt having a rack formed thereon, a sliding block having a vertical rack and formed with lugs, a segment pivoted to the lock-case within arecess in the sliding block and engaging the vertical rack thereof and the rack of thelatch-bolt, and a sleeve mounted upon the spindle of the door-knobs and having laterally-extending arms adapted to engage the lugs of the sliding block, substantially as set forth.

3. In a door-lock, the combination with the latch-bolt having a rack formed thereon, a sliding block having a vertical rack, a segment pivoted to the lock-case within a recess in said block and engaging the vertical rack thereof and the rack of the latch-bolt, said block being formed with lugs, a sleeve upon the door-knob spindle having laterally-eX- tending arms adapted to engage said lugs for the purpose of raising the sliding block, said sleeve also formed withl a projection', a latchbolt pivoted at one end of the lock-casing and adapted at its opposite end to engage the proj ection of the sleeve and prevent the rotation of the latter, and means for raising and holding said night-latch out of engagement with the sleeve, substantially as set forth.

ADAM E. KARSNER.

Witnesses:

J. A. BRIGHTWELL, JAMES A. PLoTNnR.

ICO

IIO 

